Display apparatus

ABSTRACT

The disclosure provides a display apparatus. The display apparatus of the disclosure includes a substrate having a plurality of pixel regions, a plurality of active elements, a plurality of first signal lines and second signal lines, a plurality of ground signal lines and a plurality of light emitting diodes (LEDs). The plurality of ground signal lines are disposed on the substrate and arranged to alternate with the first signal lines. At least one LED has first and second electrodes. The first electrode of at least one LED is electrically connected with a corresponding active element. A second electrode of at least one LED is electrically connected with a corresponding ground signal line. At least two LEDs disposed in an identical pixel region is electrically connected with an identical ground signal line between two first signal lines adjacent to each other. The display apparatus of the disclosure has high resolution.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a divisional application of and claims the prioritybenefit of U.S. application Ser. No. 15/597,149, filed on May 16, 2017,now allowed, which claims the priority benefits of U.S. provisionalapplication Ser. No. 62/339,107, filed on May 20, 2016, U.S. provisionalapplication Ser. No. 62/350,169, filed on Jun. 14, 2016, and Chinaapplication serial no. 201611189564.X, filed on Dec. 21, 2016. Theentirety of each of the above-mentioned patent applications is herebyincorporated by reference herein and made a part of this specification.

BACKGROUND OF THE DISCLOSURE Field of the Disclosure

The disclosure relates to a display, and particularly to a displayapparatus utilizing a micro light emitting diode (LED).

Description of Related Art

With the characteristics of light emitting diode (LED), a displayapparatus that utilizes a micro LED has the advantages of low powerconsumption, high brightness, color saturation, fast responding speedand power saving. Moreover, the display apparatus is superior inmaterial stability and non-image sticking. Accordingly, the displaytechnology of display apparatus that utilizes micro LED display receivesconsiderable attention in the field. Specifically, it is an importantissue to find out how to improve the resolution of the display apparatusthat utilizes micro LED display.

The display apparatus includes a substrate and a plurality of LEDsdisposed on an active device substrate. The active device substrate hasa reflective structure such as active element, scan line, data line,capacitor electrode and so on. Under the condition of light irradiationfrom an outer environment, the reflective structure of the active devicesubstrate reflects the light from the outer environment. The reflectedlight from the outer environment interferes with the light emitted bythe LED chip and affects the display effect. Therefore, it is also animportant issue in the field of display apparatus to explore how toimprove the display effect affected by the light from the outerenvironment.

SUMMARY OF THE DISCLOSURE

The disclosure provides a display apparatus having high resolution.

The disclosure provides a display apparatus having an excellent displayeffect.

The display apparatus of the disclosure includes a substrate, aplurality of active elements, a plurality of first signal lines, aplurality of second signal lines, a plurality of ground signal lines anda plurality of light emitting diodes (LEDs). The substrate has aplurality of pixel regions. The plurality of active elements aredisposed on the substrate. The plurality of first signal lines and theplurality of second signal lines are disposed on the substrate andelectrically connected with the active elements. An extension directionof at least one first signal line is different from an extensiondirection of at least one second signal line. The plurality of groundsignal lines are disposed on the substrate and arranged to be alternatedwith the first signal line. The plurality of LEDs are disposed on thesubstrate. At least one LED has a first electrode and a secondelectrode. The first electrode of at least one LED is electricallyconnected with a corresponding active element. The second electrode ofat least one LED is electrically connected with a corresponding groundsignal line. At least two LEDs disposed in the same pixel region areelectrically connected with the same ground signal line between twofirst signal lines adjacent to each other.

In the disclosure, the display apparatus includes a substrate, aplurality of LEDs, a first insulation layer and an anti-reflectionconductive layer. The substrate has a plurality of sub-pixel regions anda plurality of reflective structures disposed in the plurality of pixelregions. The plurality of LEDs are disposed on the plurality of pixelregions and electrically connected with the substrate. The firstinsulation layer is filled between the plurality of LEDs. Theanti-reflection conductive layer is disposed on the first insulationlayer. The reflectivity of the anti-reflection conductive layer is lowerthan the reflectivity of the reflective structure. The anti-reflectionconductive layer blocks the reflective structure of the substrate andhas a plurality of openings. The openings expose a light emitting regionof the LED.

Based on the above, in the display apparatus according to one embodimentof the disclosure, at least two LEDs disposed in the same pixel regionare electrically connected to the same ground signal line between twofirst signal lines adjacent to each other. Accordingly, the area of thesubstrate of the display apparatus can be used efficiently, therebyrealizing the display apparatus having high resolution.

In another embodiment of the disclosure, a display apparatus includes ananti-reflection conductive layer. The reflectivity of theanti-reflection conductive layer is lower than the reflectivity of thereflective structure of the active device substrate of the displayapparatus. The anti-reflection conductive layer blocks the reflectivestructure of the substrate. Since the anti-reflection conductive layerblocks the reflective structure of the substrate, most of the light fromthe outer environment irradiating to the display apparatus is blocked bythe anti-reflection conductive layer and cannot be not easily reflectedby the reflective structure of the substrate having high reflectivity.As a result, little amount of light from the outer environment isreflected, such that it is not easy to interfere with the light emittedby the micro LED of the display apparatus viewed by the user, therebyenhancing the display effect of the display apparatus. The micro LED(for example having an area less than 100 microns square or having anarea small enough that it is not visible to an unaided observer of thedisplay at a designed viewing distance) is known.

In order to make the aforementioned features and advantages of thedisclosure more comprehensible, embodiments accompanying figures aredescribed in detail below.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top view of a display apparatus according to an embodimentof the disclosure.

FIG. 2 is a cross-sectional view of an LED according to an embodiment ofthe disclosure.

FIG. 3 is a top view of a display apparatus according to anotherembodiment of the disclosure.

FIG. 4 is a top view of a display apparatus according to yet anotherembodiment of the disclosure.

FIG. 5 is a top view of a display apparatus according to yet anotherembodiment of the disclosure.

FIG. 6 is a top view of a display apparatus according to an embodimentof the disclosure.

FIG. 7 is a cross-sectional view of an LED chip according to anembodiment of the disclosure.

FIG. 8 is a top view of a display apparatus according to anotherembodiment of the disclosure.

FIG. 9 is a top view of a display apparatus according to yet anotherembodiment of the disclosure.

FIG. 10 is a top view of a display apparatus according to yet anotherembodiment of the disclosure.

FIG. 11 is a top view of a display apparatus according to an embodimentof the disclosure.

FIG. 12 is a top view of a display apparatus according to anotherembodiment of the disclosure.

FIG. 13 is a cross-sectional view of a display apparatus according to anembodiment of the disclosure.

FIG. 14 is a top view of a sub-pixel region of a display apparatusaccording to an embodiment of the disclosure.

FIG. 15 is a cross-sectional view of a display apparatus according toanother embodiment of the disclosure.

FIG. 16 is a top view of a sub-pixel region of a display apparatusaccording to yet another embodiment of the disclosure.

FIG. 17 is a cross-sectional view of a display apparatus according toyet another embodiment of the disclosure.

FIG. 18 is a top view of a sub-pixel region of a display apparatusaccording to yet another embodiment of the disclosure.

FIG. 19 is cross-sectional view of a display apparatus according to yetanother embodiment of the disclosure.

FIG. 20 is a top view of a sub-pixel region of a display apparatusaccording to yet another embodiment of the disclosure.

FIG. 21 is a cross-sectional view of a display apparatus according to anembodiment of the disclosure.

DESCRIPTION OF EMBODIMENTS

FIG. 1 is a top view of a display apparatus according to an embodimentof the disclosure. Referring to FIG. 1, a display apparatus 100 includesa substrate 110, a plurality of active elements T, a plurality of firstsignal lines 120, a plurality of second signal lines 130, a plurality ofground signal lines 140 and a plurality of light emitting diodes (LEDs)150. The substrate 110 has a plurality of pixel regions 110 a. In theembodiment, each pixel region 110 a may be defined by the first signalline 120, the ground signal line 140 (e.g. the second ground signal line140 counted from the left side of FIG. 1) corresponding to the firstsignal line 120 and two second signal lines 130 adjacent to each other.Each pixel region 110 a includes a plurality of sub-pixel regions 110 b.Each sub-pixel region 110 b may be defined by the first signal line 120,the ground signal line 140 adjacent to the first signal line 120 and twosecond signal lines 130 adjacent to each other, which should not beconstrued as a limitation to the disclosure. In other embodiments, thepixel region 110 a and/or sub-pixel region 110 b may be defined by othersuitable components. In the embodiment, the plurality of sub-pixelregions 110 b in the same pixel region 110 a may exhibit differentcolors (e.g. color of red, green and blue). Via color-mixing in theplurality of sub-pixel regions 110 b in the same pixel region 110 a, thesame pixel region 110 a can exhibit a designated color, which enablesthe display apparatus 100 to display a colored frame, which should notbe construed as a limitation the disclosure. It depends on actualrequirement to determine whether or not the plurality of sub-pixelregions 110 b in the same pixel region 110 a need to exhibit differentcolors respectively.

The plurality of active elements T are disposed on the substrate 110.The plurality of first signal lines 120 and the plurality of secondsignal lines 130 are disposed on the substrate 110 and electricallyconnected to the plurality of active elements T. An extension directionD1 of each first signal line 120 is different from an extensiondirection D2 of each second signal line 130. In the embodiment, thefirst signal line 120 and second signal line 130 may respectively belongto different film layers, and the first signal line 120 and the secondsignal line 130 may be arranged to cross each other. The active elementT includes a thin film transistor. The thin film transistor has a gate,a source and a drain. In the embodiment, the first signal line 120 maybe electrically connected with the source of the thin film transistor.The second signal line 130 may be electrically connected with the gateof the thin film transistor. In other words, in the embodiment, thefirst signal line 120 may be a data line, and the second signal line 130may be a scan line, which should not be construed as a limitation to thedisclosure.

The plurality of ground signal lines 140 are disposed on the substrate110 and arranged to be alternated with the first signal line 120. Eachground signal line 140 is disposed between two first signal lines 120adjacent to each other. In the embodiment, the first signal line 120,the second signal line 130 and the ground signal line 140 mayrespectively belong to three different film layers. An orthogonalprojection of each ground signal line 140 on the substrate 110 isbetween two orthogonal projections of two first signal lines 120adjacent to each other on the substrate 110. In the embodiment, thedisplay apparatus 100 may further include a plurality of storagecapacitors 160. Each storage capacitor 160 is electrically connectedwith a corresponding active element T respectively.

FIG. 2 is a cross-sectional view of an LED according to an embodiment ofthe disclosure. Referring to FIGS. 1 and 2, the plurality of LEDs 150are disposed on the substrate 110. Each LED 150 has a first electrode152 and a second electrode 154. The first electrode 152 of each LED 150is electrically connected with a corresponding active element T. Thesecond electrode 154 of each LED 150 is electrically connected with acorresponding ground signal line 140. Referring to FIG. 2, the LED 150includes a first semiconductor structure 156 electrically connected withthe first electrode 152, a second semiconductor structure 158electrically connected with the second electrode 154 and a lightemitting layer 159 disposed between the first semiconductor structure156 and the second semiconductor structure 158. The first semiconductorstructure 156, the second semiconductor structure 158 and the lightemitting layer 159 may be regarded as a semiconductor structure S as awhole. In the embodiment, the first electrode 152 and the secondelectrode 154 may be disposed on the same side of the semiconductorstructure S. In other words, the LED 150 may be a horizontal LED whichis electrically connected with the corresponding active element T andground signal line 140 in the manner of flip chip.

It should be noted that the second electrode 154 of at least two LEDs150 in the same pixel region 110 a is electrically connected with thesame ground signal line 140 between two first signal lines 120 adjacentto each other. In other words, in the embodiment, the two LEDs 150 whichare respectively disposed in two sub-pixel regions 110 b adjacent toeach other may share the same ground signal line 140. Thus, the numberof required ground signal line 140 can be reduced, so that the displayapparatus 100 having high resolution can be realized accordingly.

As shown in FIG. 1, in the embodiment, the plurality of LEDs 150disposed in the same pixel region 110 a and electrically connected withthe same ground signal line 140 may be disposed respectively ondifferent sides of the same ground signal line 140. To be specific, inthe embodiment, the plurality of LEDs 150 disposed in the same pixelregion 110 a and electrically connected with the same grounds signalline 140 may be staggered to each other. As a result, the area ofsubstrate 110 can be used efficiently so that the resolution of thedisplay apparatus 100 can be further enhanced.

FIG. 3 is a top view of a display apparatus according to anotherembodiment of the disclosure. A display apparatus 100A in FIG. 3 issimilar to the display apparatus 100 in FIG. 1; therefore, identical orcorresponding components are denoted by identical or correspondingreference numerals. Referring to FIG. 3, the display apparatus 100Aincludes the substrate 110, the plurality of active elements T, aplurality of first signal lines 120A, a plurality of second signal lines130A, the plurality of ground signal lines 140 and the plurality of LEDs150. The substrate 110 has the plurality of pixel regions 110 a. In theembodiment, each pixel region 110 a may be defined by two first signallines 120A adjacent to each other and corresponding two second signallines 130A (e.g. the first second signal line 130A and the fourth secondsignal line 130A counted from the left side of FIG. 3). Each pixelregion 110 a includes the plurality of sub-pixel regions 110 b. Eachsub-pixel region 110 b may be defined by two first signal lines 120Aadjacent to each other and two second signal lines 130A adjacent to eachother, which should not be construed as a limitation to the disclosure.

The plurality of active elements T are disposed on the substrate 110.The plurality of first signal lines 120A and the plurality of secondsignal lines 130A are disposed on the substrate 110 and electricallyconnected with the plurality of active elements T. The extensiondirection D1 of each first signal line 120A is different from theextension direction of each second signal line 130A. The active elementT includes a thin film transistor. The thin film transistor has a gate,a source and a drain. The difference between the display apparatus 100Aand display apparatus 100 is that, in the embodiment, the first signalline 120A is electrically connected with the gate of the thin filmtransistor. The second signal line 130A is electrically connected withthe source of the thin film transistor. That is to say, in theembodiment, the first signal line 120A may be a scan line, and thesecond signal line 130A may be data line, which should not be construedas a limitation to the disclosure.

Referring to FIG. 3, the plurality of ground signal lines 140 aredisposed on the substrate 110 and arranged to alternate with the firstsignal line 120A. Referring to FIGS. 2 and 3, the plurality of LEDs 150are disposed on the substrate 110. Each LED 150 has the first electrode152 and the second electrode 154. The first electrode 152 of each LED150 is electrically connected with a corresponding active element T. Thesecond electrode 154 of each LED 150 is electrically connected with acorresponding ground signal line 140. At least two LEDs 150 disposed inthe same pixel region 110 a are electrically connected with the sameground signal line 140 between two first signal lines 120A adjacent toeach other.

Referring to FIG. 3, the difference between the display apparatus 100Aand display apparatus 100 is that, in the embodiment, the plurality ofLEDs 150 disposed in the same pixel region 110 a and electricallyconnected with the same ground signal line 140 are disposed on the sameside of the ground signal line 140. To be specific, in the embodiment,the plurality of LEDs 150 may be arranged in a plurality of rows R, andthe plurality of LEDs 150 disposed on the same row R may be electricallyconnected with the same ground signal line 140. In addition, it shouldbe noted that, in the embodiment, the LED 150 may have a long side 150a. The sub-pixel region 110 b may be formed in a rectangular shape. Thelong side 150 a of the LED 150 may be substantially parallel with a longside 110 b-1 of the sub-pixel region 110 b. Accordingly, the area of thesubstrate 110 may be used more efficiently so that the resolution ofdisplay apparatus 100A may be further enhanced.

A display apparatus 100B in FIG. 4 is similar to the display apparatus100 in FIG. 1; therefore, identical or corresponding components aredenoted by identical or corresponding reference numerals. Referring toFIG. 4, the display apparatus 100B includes the substrate 110, theplurality of active elements T, a plurality of first signal lines 120B,a plurality of second signal lines 130B, the plurality of ground signallines 140 and the plurality of LEDs 150. The substrate 110 has theplurality of pixel regions 110 a. Each pixel region 110 a includes aplurality of sub-pixel regions 110 b. In the embodiment, each pixelregion 110 a may be defined by two first signal lines 120B adjacent toeach other and two second signal lines 130B adjacent to each other,which should not be construed as a limitation to the disclosure.

The plurality of active elements T are disposed on the substrate 110.The plurality of first signal lines 120B and the plurality of secondsignal lines 130B are disposed on the substrate 110 and electricallyconnected with the plurality of active elements T. The extensiondirection D1 of each first signal line 120B is different from theextension direction D2 of each second signal line 130B. The activeelement T includes a thin film transistor. The thin film transistor hasa gate, a source and a drain. In the embodiment, the first signal line120B is electrically connected with the gate of the thin filmtransistor. The second signal line 130B is electrically connected withthe source of the thin film transistor. That is to say, in theembodiment, the first signal line 120B may be a scan line, and thesecond signal line 130B may be a data line, which should not beconstrued as a limitation to the disclosure.

Referring to FIG. 4, the plurality of ground signal lines 140 aredisposed on the substrate 110 and arranged to alternate with the firstsignal line 120B. Referring to FIGS. 2 and 4, the plurality of LEDs 150are disposed on the substrate 110. Each LED 150 has the first electrode152 and the second electrode 154. The first electrode 152 of each LED150 is electrically connected with a corresponding active element T. Thesecond electrode 154 of each LED 150 is electrically connected with acorresponding ground signal line 140. The second electrode 154 of atleast two LEDs 150 disposed in the same pixel region 110 a areelectrically connected with the same ground signal line 140 between twofirst signal lines 120B adjacent to each other.

Referring to FIG. 4, the difference between the display apparatus 100Band display apparatus 100 is that, in the embodiment, the plurality ofLEDs 150 includes a first LED 150R, a second LED 150G and a third LED150B that emit different color of light; at least a portion of the firstLED 150R, at least a portion of the second LED 150G and at least aportion of the third LED 150B are disposed in the same sub-pixel region110 b. Accordingly, the area of the substrate 110 may be used moreefficiently so that the resolution of display apparatus 100B may befurther enhanced. In the embodiment, the first LED 150R, the second LED150G and the third LED 150B respectively can emit light of red color,green color and blue color, which should not be construed as alimitation to the disclosure. The color of light emitted by the firstLED 150R, second LED 150G and third LED 150B is subject to actualrequirement. The ground signal line 140 includes a first ground signalline 140A and a second ground signal line 140B that are respectivelydisposed on two different sides of the same first signal line 120B (e.g.the first signal line 120B at the bottom of FIG. 4). The secondelectrode 154 of the first LED 150R is electrically connected with thefirst ground signal line 140A. The second electrode 154 of the secondLED 150G and the second electrode 154 of the third LED 150B areelectrically connected with the second ground signal line 140B.

FIG. 5 is a top view of a display apparatus according to yet anotherembodiment of the disclosure. A display apparatus 100C in FIG. 5 issimilar to the display apparatus 100 in FIG. 1; therefore, identical orcorresponding components are denoted by identical or correspondingreference numerals. Referring to FIG. 5, the display apparatus 100Cincludes the substrate 110, the plurality of active elements T, theplurality of first signal lines 120, the plurality of second signallines 130, the plurality of ground signal lines 140 and the plurality ofLEDs 150. The substrate 110 has the plurality of pixel regions 110 a.The plurality of active elements T are disposed on the substrate 110.The plurality of first signal lines 120 and the plurality of secondsignal lines 130 are disposed on the substrate 110 and electricallyconnected with the plurality of active elements T. The extensiondirection D1 of each first signal line 120 is different from theextension direction D2 of each second signal line 130. The plurality ofground signal lines 140 are disposed on the substrate 110 and arrangedto be alternated with the first signal line 120.

Referring to FIGS. 2 and 5, the plurality of LEDs 150 are disposed onthe substrate 110. Each LED 150 has the first electrode 152 and thesecond electrode 154. The first electrode 152 of each LED 150 iselectrically connected with a corresponding active element T. The secondelectrode 154 of each LED 150 is electrically connected with acorresponding ground signal line 140. At least two LEDs 150 disposed inthe same pixel region 110 a are electrically connected with the sameground signal line 140 between two first signal lines 120 adjacent toeach other.

The difference between the display apparatus 100C and display apparatus100 is that, in the embodiment, the plurality of LEDs 150 may beselectively aligned with each other. To be more specific, each LED 150has a width W in the extension direction D2 of the second signal line130, and the width W may be substantially equal to a distance L betweenthe first signal line 120 to the ground signal line 140 that is theclosest to the first signal line 120. Accordingly, the area of thesubstrate 110 may be used more efficiently so that the resolution ofdisplay apparatus 100C may be further enhanced.

FIG. 6 is a top view of a display apparatus according to an embodimentof the disclosure. A display apparatus 100D in FIG. 6 is similar to thedisplay apparatus 100 in FIG. 1; therefore, identical or correspondingcomponents are denoted by identical or corresponding reference numerals.The display apparatus 100D includes the substrate 110, the plurality ofactive elements T, the plurality of first signal lines 120, theplurality of second signal lines 130, the plurality of ground signallines 140 and a plurality of LEDs 172. The substrate 110 has theplurality of pixel regions 110 a. The plurality of active elements T aredisposed on the substrate 110. The plurality of first signal lines 120and the plurality of second signal lines 130 are disposed on thesubstrate 110 and electrically connected with the plurality of activeelements T. The extension direction D1 of each first signal line 120 isdifferent from the extension direction D2 of each second signal line130. The plurality of ground signal lines 140 are disposed on thesubstrate 110 and arranged to be alternated with the first signal line120.

FIG. 7 is a cross-sectional view of an LED chip according to anembodiment of the disclosure. Referring to FIGS. 6 and 7, the pluralityof LEDs 172 are disposed on the substrate 110. Each LED 172 has a firstelectrode 172 a and a second electrode 172 b. The first electrode 172 aof each LED 172 is electrically connected with a corresponding activeelement T. The second electrode 172 b of each LED 172 is electricallyconnected with a corresponding ground signal line 140. Referring to FIG.7, each LED 172 includes a first semiconductor structure 172 celectrically connected with the first electrode 172 a, a secondsemiconductor structure 172 d electrically connected with the secondelectrode 172 b and a light emitting layer 172 e disposed between thefirst semiconductor structure 172 c and the second semiconductorstructure 172 d. The first semiconductor structure 172 c, the secondsemiconductor structure 172 d and the light emitting layer 172 e may beregarded as a semiconductor structure S as a whole. In the embodiment,the first electrode 172 a and the second electrode 172 b may be disposedon the same side of the semiconductor structure S. In other words, eachLED 172 may be a horizontal LED which is electrically connected with thecorresponding active element T and ground signal line 140 in the mannerof flip chip.

Referring to FIGS. 6 and 7, the second electrode 172 b of at least twoLEDs 172 in the same pixel region 110 a is electrically connected withthe same ground signal line 140 between two first signal lines 120adjacent to each other. The difference between the display apparatus100D and display apparatus 100 is that, in the embodiment, the secondsemiconductor structures 172 d of the plurality of LEDs 172 electricallyconnected to the same ground signal line 140 are in contact with eachother and formed in the same semiconductor layer. In other words, theplurality of LEDs 172 electrically connected with the same ground signalline 140 are the same LED chip 170. The plurality of LEDs 172electrically connected with the same ground signal line 140 are aplurality of portions of the same LED chip 170 and may share the samesecond electrode 172 b. Thus, the area of the substrate 110 can be usedmore efficiently so that the resolution of the display apparatus 100Dcan be further enhanced.

Referring to FIG. 6, in the embodiment, the plurality of sub-pixelregions 110 b are spaced apart by an interval P1 in the extensiondirection D2 of the second signal line 130. The interval P1 is, forexample, a distance between a first signal line 120 to a ground signalline 140 that is the closest to the first signal line 120. Referring toFIGS. 6 and 7, a distance between two first electrodes 172 a of two LEDs172 adjacent to each other and electrically connected with the sameground signal line 140 is P2. P2 is not equal to P1. Two LED chips 170are adjacent to each other in a direction parallel with the extensiondirection D2 of the second signal line 130. A distance between two firstelectrodes 172 a that respectively belong to two LED chips 170 andclosest to each other is P3. P3 is not equal to P1. More specifically,P2 is not equal to P3 either.

FIG. 8 is a top view of a display apparatus according to anotherembodiment of the disclosure. A display apparatus 100E in FIG. 8 issimilar to the display apparatus 100D in FIG. 6; therefore, identical orcorresponding components are denoted by identical or correspondingreference numerals. The display apparatus 100E includes the substrate110, the plurality of active elements T, a plurality of first signallines 120E, a plurality of second signal lines 130E, the plurality ofground signal lines 140 and the plurality of LEDs 172. The substrate 110has the plurality of pixel regions 110 a. In the embodiment, each pixelregion 110 a may be defined by two second signal lines 130E (e.g. thefirst second signal line 130E and the fourth second signal line 130Ecounted from the left side of FIG. 8) and two ground signal lines 140adjacent to each other. Each pixel region 110 a includes a plurality ofsub-pixel regions 110 b. Each pixel region 110 b may be defined by twosecond signal lines 130E adjacent to each other and two ground signallines 140 adjacent to each other, which should not be construed as alimitation to the disclosure.

The plurality of active elements T are disposed on the substrate 110.The plurality of first signal lines 120E and the plurality of secondsignal lines 130E are disposed on the substrate 110 and electricallyconnected to the plurality of active elements T. The extension directionD1 of each first signal line 120E is different from the extensiondirection D2 of each second signal line 130E. The plurality of groundsignal lines 140 are disposed on the substrate 110 and arranged to bealternated with the first signal line 120E. In the embodiment, the firstsignal line 120E is, for example, a scan line, and the second signalline 130E is, for example a data line, which should not be construed asa limitation to the disclosure.

Referring to FIGS. 7 and 8, the plurality of LEDs 172 are disposed onthe substrate 110. Each LED 172 has the first electrode 172 a and thesecond electrode 172 b. The first electrode 172 a of each LED 172 iselectrically connected with a corresponding active element T. The secondelectrode 172 b of each LED 172 is electrically connected with acorresponding ground signal line 140. The second electrode 172 b of atleast two LEDs 172 in the same pixel region 110 a is electricallyconnected to the same ground signal line 140 between two first signallines 120E adjacent to each other.

The difference between the display apparatus 100E and display apparatus100D is that, in the embodiment, two LEDs 172 in the same LED chip 170are respectively disposed in two sub-pixel regions 110 b adjacent toeach other. Two LEDs 172 respectively belong to different LED chips 170are disposed in the same sub-pixel region 110 b corresponding to asingle color. To be more specific, two first electrodes 172 a of twoLEDs 172 respectively belong to different LED chips 170 in the samesub-pixel region 110 b may be electrically connected to the same activeelement T in the same sub-pixel region 110 b. With such configuration,when one of the plurality of LEDs 172 disposed in the same sub-pixelregion 110 b is damaged, another LED 172 may still operate normally suchthat the display apparatus 100E can continue to serve normal displayfunction.

Referring to FIG. 8, in the embodiment, the plurality of sub-pixelregions 110 b are spaced apart by the interval P1 in the extensiondirection D2 of the second signal line 130E. The interval P1 is, forexample, a distance between two ground signal lines 140 adjacent to eachother. Referring to FIGS. 7 and 8, the distance between two firstelectrodes 172 a of two LEDs 172 adjacent to each other and electricallyconnected with the same ground signal line 140 is P2. P2 is not equal toP1. The two LED chips 170 are adjacent to each other in a directionparallel with the extension direction D2 of the second signal line 130E.The distance between two first electrodes 172 a that respectively belongto the two LED chips 170 and closest to each other is P3. P3 is notequal to P1. More specifically, P2 is not equal to P3 either.

FIG. 9 is a top view of a display apparatus according to yet anotherembodiment of the disclosure. A display apparatus 100F in FIG. 9 issimilar to the display apparatus 100E in FIG. 8; therefore, identical orcorresponding components are denoted by identical or correspondingreference numerals. The display apparatus 100F includes the substrate110, the plurality of active elements T, the plurality of first signallines 120E, the plurality of second signal lines 130E, the plurality ofground signal lines 140 and the plurality of LEDs 172. The substrate 110has the plurality of pixel regions 110 a. The plurality of activeelements T are disposed on the substrate 110. The plurality of firstsignal lines 120E and the plurality of second signal lines 130E aredisposed on the substrate 110 and electrically connected with theplurality of active elements T. The extension direction D1 of each firstsignal line 120E is different from the extension direction D2 of eachsecond signal line 130E. The plurality of ground signal lines 140 aredisposed on the substrate 110 and arranged to be alternated with thefirst signal line 120E.

Referring to FIGS. 7 and 9, the plurality of LEDs 172 are disposed onthe substrate 110. Each LED 172 has the first electrode 172 a and thesecond electrode 172 b. The first electrode 172 a of each LED 172 iselectrically connected with a corresponding active element T. The secondelectrode 172 b of each LED 172 is electrically connected with acorresponding ground signal line 140. The second electrode 172 b of atleast two LEDs 172 disposed in the same pixel region 110 a iselectrically connected with the same ground signal line 140 between twofirst signal lines 120E adjacent to each other. Different from thedisplay apparatus 100D, as shown in FIG. 9, in the embodiment, the sameLED chip 170F includes four LEDs 172. The four LEDs 172 may berespectively disposed in four sub-pixel regions 110 b which are adjacentto each other. In the embodiment, the plurality of LED chips 170F may beselectively staggered in a direction parallel with the extensiondirection D2 of the second signal line 130E, which should not beconstrued as a limitation to the disclosure. FIG. 10 is a top view of adisplay apparatus according to yet another embodiment of the disclosure.A display apparatus 100G in FIG. 10 is similar to the display apparatus100F in FIG. 9; therefore, identical or corresponding components aredenoted by identical or corresponding reference numerals. In theembodiment of FIG. 10, the plurality of LED chips 170F may be alignedwith each other in a direction parallel with the extension direction D2of the second signal line 130E.

FIG. 11 is a top view of a display apparatus according to an embodimentof the disclosure. A display apparatus 100H in FIG. 11 is similar to thedisplay apparatus 100G in FIG. 10; therefore, identical or correspondingcomponents are denoted by identical or corresponding reference numerals.The display apparatus 100H includes the substrate 110, the plurality ofactive elements T, a plurality of first signal lines 120F, a pluralityof second signal lines 130F, the plurality of ground signal lines 140and the plurality of LEDs 172. The substrate 110 has the plurality ofpixel regions 110 a. The plurality of active elements T are disposed onthe substrate 110. The plurality of first signal lines 120F and theplurality of second signal lines 130F are disposed on the substrate 110and electrically connected with the plurality of active elements T. Theextension direction D1 of each first signal line 120E is different fromthe extension direction D2 of each second signal line 130E. Theplurality of ground signal lines 140 are disposed on the substrate 110and arranged to be alternated with the first signal line 120F.

Referring to FIGS. 7 and 11, the plurality of LEDs 172 are disposed onthe substrate 110. Each LED 172 has the first electrode 172 a and thesecond electrode 172 b. The first electrode 172 a of each LED 172 iselectrically connected with a corresponding active element T. The secondelectrode 172 b of each LED 172 is electrically connected with acorresponding ground signal line 140. The second electrode 172 b of atleast two LEDs 172 disposed in the same pixel region 110 a iselectrically connected with the same ground signal line 140 between twofirst signal lines 120E adjacent to each other. The same LED chip 170Fincludes four LEDs 172. The four LEDs 172 may be respectively disposedin four sub-pixel regions 110 b which are adjacent to each other. Thefour sub-pixel regions 110 b which are adjacent to each other mayselectively correspond to color of red, green, blue and whiterespectively, which should not be construed as a limitation to thedisclosure.

The difference between the display apparatus 100H and display apparatus100G is that, in the embodiment, an aspect ratio of the sub-pixel region100 b may be 1:1. That is to say, the sub-pixel region 110 b may bedesigned to have a rectangular shape to adapt to the shape of LED chip170F. In the embodiment, the rectangle is a square shape so that thearea of substrate 110 can be used efficiently so that the resolution ofdisplay apparatus 100H can be enhanced. In the embodiment, the LED chips170F may be aligned with each other in a direction parallel with theextension direction D1 of the first signal line 120F, which should notbe construed as a limitation to the disclosure. FIG. 12 is a top view ofa display apparatus according to yet another embodiment of thedisclosure. A display apparatus 100I in FIG. 12 is similar to thedisplay apparatus 100H in FIG. 11; therefore, identical or correspondingcomponents are denoted by identical or corresponding reference numerals.In the embodiment of FIG. 12, the plurality of LED chips 170F may bestaggered in a direction parallel with the extension direction D1 of thefirst signal line 120F. In addition, in the embodiment of FIG. 12, theplurality of LEDs 172 respectively belong to different LED chips 170Fare disposed in the same sub-pixel region 110 b. With suchconfiguration, when one of the plurality of LEDs 172 disposed in thesame sub-pixel region 110 b is damaged, another LED 172 may stilloperate normally such that the display apparatus 100I can continue toserve normal display function.

FIG. 13 is a cross-sectional view of a display apparatus according to anembodiment of the disclosure. FIG. 14 is a top view of a sub-pixelregion of a display apparatus according to an embodiment of thedisclosure. For clarity of illustration, a light blocking structure 250in FIG. 13 is omitted in FIG. 14. Referring to FIGS. 13 and 14, adisplay apparatus 200 includes a substrate 210, a plurality of LEDs 220,a first insulation layer 230 and an anti-reflection conductive layer240. The substrate 210 has a plurality of sub-pixel regions 210 a and aplurality of reflective structures disposed in the plurality ofsub-pixel regions 210 a. In the embodiment, the substrate 210 has theplurality of active elements T, the plurality of data lines DL, theplurality of scan lines SL and a capacitor electrode 212. The activeelement T is disposed in the sub-pixel region 210 a. The active elementT includes the thin film transistor. The thin film transistor has thegate, source and drain. The scan line SL is electrically connected withthe gate of the thin film transistor. The data line DL is electricallyconnected with the source of the thin film transistor. The capacitorelectrode 212 is electrically connected with the drain of the thin filmtransistor. The capacitor electrode 212 overlaps the anti-reflectionconductive layer 240 to form a storage capacitor. In the embodiment, areflective structure of the substrate 210 may include the active elementT, data line DL, scan line SL, capacitor electrode 212 or a combinationthereof, which should not be construed as a limitation to thedisclosure. In other embodiments, the reflective structure of thesubstrate 210 may also refer to other components that have reflectivecharacteristic or a combination of other components and at least one ofthe active element T, data line DL, scan line SL and capacitor electrode212.

The plurality of LEDs 220 are disposed on the plurality of sub-pixelregions 210 a and electrically connected with the substrate 210. In theembodiment, each LED 220 includes a first semiconductor layer 222, asecond semiconductor layer 224, a light emitting layer 226 disposedbetween the first semiconductor layer 222 and the second semiconductorlayer 224 and a transparent electrode 228. The transparent electrode 228is disposed on the second semiconductor layer 224 and electricallyconnected with the second semiconductor layer 224. The light emittinglayer 226 defines a light emitting region 220 a of the LED 220. Thefirst semiconductor layer 222 is electrically connected with the activeelement T. Specifically, the first semiconductor layer 222 may beelectrically connected with the drain of the thin film transistor. Inthe embodiment, the LED 220 may selectively include a contact pad 229disposed on the transparent electrode 228, which should not be construedas a limitation to the disclosure. In other embodiments, the LED 220 maybe provided without the contact pad 229.

The first insulation layer 230 is filled between the LED 220. To be morespecific, in the embodiment, the first insulation layer 230 may cover aside wall of the LED 220 and expose the transparent electrode 228 of theLED 220. The display apparatus 200 may further include a light blockingstructure 250. The light blocking structure 250 is configured to preventthat the light emitted from the plurality of LEDs 220 disposed indifferent sub-pixel regions 210 a from interfering with each other. Inthe embodiment, the light blocking structure 250 is disposed on theactive device substrate 210 and may selectively overlap the scan line SLand data line DL, which should not be construed as a limitation to thedisclosure. In other embodiments, the light blocking structure 250 maydirectly cover the side wall of the LED 220 or may be disposed inanother suitable position.

The anti-reflection conductive layer 240 is disposed on the firstinsulation layer 230. The anti-reflection conductive layer 240 has aplurality of openings 242. The opening 242 exposes the light emittingregion 220 a of the LED 220. The light emitted from the LED 220 may betransmitted to the user's eyes by passing through the anti-reflectionconductive layer 240 via the opening 242 to achieve the display effect.The anti-reflection conductive layer 240 blocks the reflective structureof the substrate 210. For example, in the embodiment, theanti-reflection conductive layer 240 may block at least a portion of theregion of the capacitor electrode 212 outside the LED 220, the activeelement T, data line DL and scan line SL, which should not be construedas a limitation to the disclosure. The reflectivity of theanti-reflection conductive layer 240 is lower than the reflectivity ofeach reflective structure (e.g. capacitor electrode 212, active elementT, data line DL, scan line SL or a combination thereof). In theembodiment, the material of the reflective structure of the activedevice substrate 210 is, for example, a metal having high reflectivity.The anti-reflection conductive layer 240 may be a composite layer havinglow reflectivity such as a stacked layer comprising at least two ofchromium, chromium nitride and chromium oxide or a stacked layercomprising aluminum alloy and AlX-N. The afore-mentioned AlX-N isaluminum nitride or aluminum alloy nitride, which should not beconstrued as a limitation to the disclosure. The appearance of theanti-reflection conductive layer 240 may be similar to a darkened metalwhich does not reflect light easily.

It should be noted that since the anti-reflection conductive layer 240blocks the reflective structure of the substrate 210, most of the lightfrom the outer environment irradiating the display apparatus 200 isblocked by the anti-reflection conductive layer 240 and cannot be easilyreflected by the reflective structure of the substrate 210 having highreflectivity. As a result, little amount of light from the outerenvironment is reflected, and it is not easy to interfere the lightemitted by the LED 220 viewed by the user; therefore, the display effectof the display apparatus 200 can be enhanced.

In the embodiment, the anti-reflection conductive layer 240 mayselectively not to cover an edge 228 a of the transparent electrode 228of the display apparatus 200, such that most of the light emitted by theLED 220 can pass through the anti-reflection conductive layer 240 fordisplay function, which should not be construed as a limitation to thedisclosure. In other embodiments, the anti-reflection conductive layer240 may cover the edge 228 a of the transparent electrode 228.

In the embodiment, the display apparatus 200 may further include atransparent conductive layer 260. The transparent conductive layer 260is disposed on the first insulation layer 230, covers the sub-pixelregion 210 a and electrically connected with the plurality oftransparent electrodes 228 of the plurality of LEDs 220. Specifically,in the embodiment, the opening 242 of the anti-reflection conductivelayer 240 exposes the transparent electrode 228 of the LED 220. Thetransparent conductive layer 260 covers the anti-reflection conductivelayer 240 and is filled in the opening 242 of the anti-reflectionconductive layer 240 to be electrically connected with the plurality oftransparent electrodes 228 of the plurality of LEDs 220. Briefly, in theembodiment, the anti-reflection conductive layer 240 may selectively notto be electrically in contact with the transparent electrode 228directly, and the plurality of transparent electrodes 228 of theplurality of display apparatus 200 may be electrically connected witheach other via the transparent conductive layer 260.

It should be noted that the transparent conductive layer 260 covers theanti-reflection conductive layer 240 and is electrically connected withthe anti-reflection conductive layer 240. In addition, the conductivityof the anti-reflection conductive layer 240 is higher than theconductivity of the transparent conductive layer 260. As compared with asingle transparent conductive layer, the ground signal line (i.e. thestacked layer comprising anti-reflection conductive layer 240 andtransparent conductive layer 260) shared by the plurality of LEDs 220has a low resistance and helps to enhance electrical performance of thedisplay apparatus 200, however, the disclosure provides no limitationthereto. In other embodiments, the anti-reflection conductive layer 240may be adopted to be electrically connected with the plurality oftransparent electrodes 228 of the plurality of display apparatus 200directly without disposing the transparent conductive layer 260.Detailed embodiments are provided below with illustration ofaccompanying drawings.

Referring to FIG. 13, in the embodiment, the anti-reflection conductivelayer 240 may slightly block an edge region of the light emitting layer226. The light emitting layer 226 of the LED 220 has a width L1 in adirection x. An opening 242 of the anti-reflection conductive layer 240corresponding to the light emitting layer 226 has a width L2 in thedirection x. The width L2 may be greater than a half of the width L1.The width L1 of the light emitting layer 226 is, for example, between0.5 μm to 500 μm, which should not be construed as a limitation to thedisclosure. It depends on actual requirement to determine whether or notthe anti-reflection conductive layer 240 is set to block the lightemitting layer 226, the relationship between the width L2 and width L1(alternatively, how much portion of the light emitting layer 226 isblocked by the anti-reflection conductive layer 240), and specificvalues of the width L2 and width L1.

FIG. 15 is a cross-sectional view of a display apparatus according toanother embodiment of the disclosure. FIG. 16 is a top view of asub-pixel region of a display apparatus according to yet anotherembodiment of the disclosure. For clarity of illustration, the lightblocking structure 250 in FIG. 15 is omitted in FIG. 16. Referring toFIGS. 15 and 16, a display apparatus 200A is similar to the displayapparatus 200; therefore, identical or corresponding components aredenoted by identical or corresponding reference numerals. Referring toFIGS. 15 and 16, the display apparatus 200A includes the substrate 210,the plurality of LEDs 220, the first insulation layer 230 and ananti-reflection conductive layer 240A. The substrate 210 has a pluralityof sub-pixel regions 210 a and the plurality of reflective structuresdisposed in the sub-pixel regions 210 a. The LED 220 is disposed on thesub-pixel region 210 a and electrically connected with the substrate210. The first insulation layer 230 is filled between the LED 220. Theanti-reflection conductive layer 240A is disposed on the firstinsulation layer 230. The reflectivity of the anti-reflection conductivelayer 240A is lower than the reflectivity of the reflective structure(e.g. capacitor electrode 212, active element T, data line DL, scan lineSL, or a combination thereof) of the substrate 210. The anti-reflectionconductive layer 240A blocks the reflective structure of the substrate210 and has the plurality of openings 242. The opening 242 exposes thelight emitting region 220 a of the LED 220.

Different from the display apparatus 200, in the embodiment, theplurality of transparent electrodes 228 of the plurality of LEDs 220 areelectrically connected with each other directly via the anti-reflectionconductive layer 240A without configuration of the transparentconductive layer 260. For example, the anti-reflection conductive layer240A includes a body portion 244 and an extension portion 246 connectedwith the body portion. The extension portion 246 is disposed on thetransparent electrode 228 of each LED 220 and electrically connectedwith the transparent electrode 228. The body portion 244 blocks a regionoutside the plurality of transparent electrodes 228 of the plurality ofLEDs 220. The plurality of transparent electrodes 228 of the pluralityof LEDs 220 are electrically connected with each other via the extensionportion 246 disposed thereon and the body portion 244. The displayapparatus 200A has similar effect and advantage as the display apparatus200; no repetition is incorporated herein.

FIG. 17 is a cross-sectional view of a display apparatus of anotherembodiment of the disclosure. FIG. 18 is a top view of a sub-pixelregion of a display apparatus of yet another embodiment of thedisclosure. For clarity of illustration, the light blocking structure250 in FIG. 17 is omitted in FIG. 18. Referring to FIGS. 17 and 18, adisplay apparatus 200B is similar to the display apparatus 200A;therefore, identical or corresponding components are denoted byidentical or corresponding reference numerals. Referring to FIGS. 17 and18, the display apparatus 200B includes the substrate 210, the pluralityof LEDs 220, the first insulation layer 230 and an anti-reflectionconductive layer 240B. The substrate 210 has a plurality of sub-pixelregions 210 a and the plurality of reflective structures disposed in thesub-pixel region 210 a. The LED 220 is disposed on the sub-pixel region210 a and electrically connected with the substrate 210. The firstinsulation layer 230 is filled between the LEDs 220. The anti-reflectionconductive layer 240B is disposed on the first insulation layer 230. Thereflectivity of the anti-reflection conductive layer 240B is lower thanthe reflectivity of the reflective structure (e.g. capacitor electrode212, active element T, data line DL, scan line SL or a combinationthereof) of the substrate 210. The anti-reflection conductive layer 240Bblocks the reflective structure of the substrate 210 and has theplurality of openings 242. The opening 242 exposes the light emittingregion 220 a of the LED 220.

Different from the display apparatus 200A, in the embodiment, theanti-reflection conductive layer 240B includes a plurality of meshstructures 246B having the opening 242. Each mesh structure 246Boverlaps a corresponding LED 220. The display apparatus 200B uses themesh structure 246B of the anti-reflection conductive layer 240B toreplace the function of the extension portion 246 of the displayapparatus 200A. Specifically, the anti-reflection conductive layer 240Bincludes the body portion 244 and the mesh structure 246B connected withthe body portion 244. The mesh structure 246B is disposed on thetransparent electrode 228 of each LED 220 and electrically connectedwith the transparent electrode 228. The body portion 244 blocks a regionoutside the plurality of transparent electrodes 228 of the plurality ofLEDs 220. The plurality of transparent electrodes 228 of the pluralityof LEDs 220 are electrically connected with each other via the meshstructure 246B disposed thereon and the body portion 244. The meshstructure 246B of the anti-reflection conductive layer 240B has aplurality of light transmission holes so as not to excessively block thelight emitting region 210 a of the LEDs 220. The display apparatus 200Bhas similar effect and advantage as the display apparatus 200; norepetition is incorporated herein.

FIG. 19 is a cross-sectional view of a display apparatus according toyet another embodiment of the disclosure. FIG. 20 is a top view of asub-pixel region of a display apparatus of yet another embodiment of thedisclosure. For clarity of illustration, the light blocking structure250 in FIG. 19 is omitted in FIG. 20. Referring to FIGS. 19 and 20, adisplay apparatus 200C is similar to the display apparatus 200;therefore, identical or corresponding components are denoted byidentical or corresponding reference numerals. Referring to FIGS. 19 and20, the display apparatus 200C includes the substrate 210, a pluralityof LEDs 220C, a first insulation layer 230 and an anti-reflectionconductive layer 240. The substrate 210 has the plurality of sub-pixelregions 210 a and the plurality of reflective structures disposed in thesub-pixel regions 210 a. The LED 220C is disposed on the sub-pixelregion 210 a and electrically connected with the substrate 210. Thefirst insulation layer 230 is filled between the LED 220C. Theanti-reflection conductive layer 240 is disposed on the first insulationlayer 230. The reflectivity of the anti-reflection conductive layer 240is lower than the reflectivity of the reflective structure (e.g.capacitor electrode 212, active element T, data line DL, scan line SL ora combination thereof) of the substrate 210. The anti-reflectionconductive layer 240 blocks the reflective structure of the substrate210 and has the plurality of openings 242. The opening 242 exposes thelight emitting region 220 a of the LED 220.

Different from the display apparatus 200, in the embodiment, the LED220C may be provided without the contact pad 229 of the LED 220 suchthat more light can be transmitted to the user's eyes so as to enhancethe brightness of the display apparatus 200C. In the meantime, thedisplay apparatus 200C has similar effect and advantage as the displayapparatus 200; no repetition is incorporated herein.

FIG. 21 is a cross-sectional view of a display apparatus according to anembodiment of the disclosure. Referring to FIGS. 20 and 21, a displayapparatus 200D is similar to the display apparatus 200C; therefore,identical or corresponding components are denoted by identical orcorresponding reference numerals. Referring to FIG. 21, the displayapparatus 200D includes the substrate 210, the plurality of LEDs 220C,the first insulation layer 230 and an anti-reflection conductive layer240D. The substrate 210 has the plurality of sub-pixel regions 210 a andthe plurality of reflective structures disposed in the sub-pixel region210 a. The LED 220C is disposed on the sub-pixel region 210 a andelectrically connected with the substrate 210. The first insulationlayer 230 is filled between the LEDs 220C. The anti-reflectionconductive layer 240D is disposed on the first insulation layer 230. Thereflectivity of the anti-reflection conductive layer 240D is lower thanthe reflectivity of the reflective structure (e.g. capacitor electrode212, active element T, data line DL, scan line SL or a combinationthereof) of the substrate 210. The anti-reflection conductive layer 240Dblocks the reflective structure of the substrate 210 and has theplurality of openings 242. The opening 242 exposes the light emittingregion 220 a of the LED 220C.

Different from the display apparatus 200C, in the embodiment, atransparent conductive layer 260D covers the first insulation layer 230and the transparent electrode 228 of the LED 220C, and theanti-reflection conductive layer 240D is disposed on the transparentconductive layer 260D. In other words, in the embodiment, thetransparent conductive layer 260D is used to be electrically connectedwith the plurality of LEDs 220C first; thereafter, the anti-reflectionconductive layer 240D is disposed on the transparent conductive layer260D and electrically connected with the transparent conductive layer260D. The display apparatus 200D has similar effect and advantage as thedisplay apparatus 200; no repetition is incorporated herein.

In summary of the above, in the display apparatus according to anembodiment of the disclosure, at least two LEDs disposed in the samepixel region are electrically connected with the same ground signal linebetween two first signal lines adjacent to each other. Accordingly, thearea of the substrate of the display apparatus can be used efficientlyso that the resolution of the display apparatus can be enhanced.

In another embodiment of the disclosure, the display apparatus includesthe anti-reflection conductive layer. The reflectivity of theanti-reflection conductive layer is lower than the reflectivity of thereflective structure of the active device substrate of the displayapparatus. The anti-reflection conductive layer blocks the reflectivestructure of the substrate. Since the anti-reflection conductive layerblocks the reflective structure of the substrate, most of the light fromthe outer environment irradiating the display apparatus is blocked bythe anti-reflection conductive layer and cannot be easily reflected bythe reflective structure of the substrate having high reflectivity. As aresult, little amount of light from the outer environment is reflected,and it is not easy to interfere with the light emitted by the LED of thedisplay apparatus viewed by the user, such that the display effect ofthe display apparatus can be enhanced.

Although the disclosure has been disclosed by the above embodiments, theembodiments are not intended to limit the disclosure. It will beapparent to those skilled in the art that various modifications andvariations can be made to the structure of the disclosure withoutdeparting from the scope or spirit of the disclosure. Therefore, theprotecting range of the disclosure falls in the appended claims.

What is claimed is:
 1. A display apparatus, comprising: a substrate,having a plurality of pixel regions; a plurality of active elementsdisposed on the substrate; a plurality of first signal lines and aplurality of second signal lines, disposed on the substrate andelectrically connected with the plurality of active elements, anextension direction of at least one of the first signal lines beingdifferent from an extension direction of at least one of the secondsignal lines; a plurality of ground signal lines, disposed on thesubstrate, at least one of the ground signal lines disposed between twoof the first signal lines adjacent to each other; and a plurality oflight emitting diodes (LEDs), disposed on the substrate, wherein atleast one of the LEDs comprises a first electrode and a secondelectrode, the first electrode of at least one of the LEDs iselectrically connected with one of the active elements, the secondelectrode of at least one of the LEDs is electrically connected with oneof the ground signal lines, at least two LEDs disposed in an identicalpixel region are electrically connected to an identical ground signalline of the ground signal lines between two of the first signal linesadjacent to each other.
 2. The display apparatus according to claim 1,wherein the at least two LEDs are respectively disposed on both sides ofthe identical ground signal line.
 3. The display apparatus according toclaim 1, wherein at least one of the pixel regions comprises a pluralityof sub-pixel regions, at least one of the sub-pixel regions is definedby two first signal lines adjacent to each other and two second signallines adjacent to each other, the plurality of LEDs comprise a firstLED, a second LED and a third LED having different color light emission,at least a portion of the first LED, at least a portion of the secondLED and at least a portion of the third LED are disposed in an identicalsub-pixel region.
 4. The display apparatus according to claim 3, whereinthe plurality of ground signal lines further comprise a first groundsignal line and a second ground signal line respectively disposed onboth sides of an identical first signal line, one of the first LED, thesecond LED and the third LED is electrically connected with the firstground signal line, and the others are electrically connected with thesecond ground signal line.
 5. The display apparatus according to claim1, wherein at least one of the LEDs comprises: a first semiconductorstructure, electrically connected with the first electrode; a secondsemiconductor structure, electrically connected with the secondelectrode; and a light emitting layer, disposed between the firstsemiconductor structure and the second semiconductor structure, whereina plurality of second semiconductor structures of the at least two LEDsare in contact with each other and formed in an identical semiconductorlayer.
 6. The display apparatus according to claim 5, wherein at leastone of the pixel regions comprises a plurality of sub-pixel regions, theplurality of sub-pixel regions are spaced apart by an interval P1 in adirection parallel with the extension direction of at least one of thesecond signal lines, the at least two LEDs are respectively disposed intwo sub-pixel regions adjacent to each other, a distance between thefirst electrodes of the at least two LEDs is P2, and P2 is not equal toP1.
 7. The display apparatus according to claim 5, wherein at least oneof the pixel regions comprises a plurality of sub-pixel regions, theplurality of sub-pixel regions are spaced apart by an interval P1 in adirection parallel with the extension direction of at least one of thesecond signal lines, the at least two LEDs form a plurality of LEDchips, each of the LED chips comprises the plurality of secondsemiconductor structures in contact with each other and formed in anidentical semiconductor layer, two LED chips are adjacent to each otherin a direction parallel with the extension direction of at least one ofthe second signal lines, a distance between two first electrodesrespectively belong to the two LED chips and closest to each other isP3, and P3 is not equal to P1.
 8. The display apparatus according toclaim 5, wherein at least one of the pixel regions comprises a pluralityof sub-pixel regions, the plurality of LEDs form at least one LED chip,at least one of the LED chips comprises the at least two LEDs comprisingthe plurality of second semiconductor structures in contact with eachother and formed in an identical semiconductor layer, the at least twoLEDs of an identical LED chip are respectively disposed in at least twosub-pixel regions adjacent to each other, a plurality of LEDsrespectively belong to different LED chips are disposed in an identicalsub-pixel region.
 9. The display apparatus according to claim 5, whereinat least one of the pixel regions comprises a plurality of sub-pixelregions, the plurality of LEDs form at least one LED chip, the at leastone of the LED chip comprises the at least two LEDs comprising theplurality of second semiconductor structures in contact with each otherand formed in an identical semiconductor layer, the at least two LEDsare four LEDs, the four LED chips of an identical LED chip arerespectively disposed in four sub-pixel regions adjacent to each other.10. The display apparatus according to claim 9, wherein the plurality ofLED chips are aligned or staggered to each other in a direction parallelwith the extension direction of at least one of the second signal lines.11. The display apparatus according to claim 9, wherein at least one ofthe sub-pixel regions of the four sub-pixel regions adjacent to eachother is in a rectangular shape.